138792049 has 8 divisors (see below), whose sum is σ = 151929792. Its totient is φ = 125741040.

The previous prime is 138792037. The next prime is 138792139. The reversal of 138792049 is 940297831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138792049 - 2¹³ = 138783857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138791996 and 138792014.

It is not an unprimeable number, because it can be changed into a prime (138795049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18309 + ... + 24754.

It is an arithmetic number, because the mean of its divisors is an integer number (18991224).

Almost surely, 2^138792049 is an apocalyptic number.

It is an amenable number.

138792049 is a deficient number, since it is larger than the sum of its proper divisors (13137743).

138792049 is a wasteful number, since it uses less digits than its factorization.

138792049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43367.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 138792049 is about 11781.0037348267. The cubic root of 138792049 is about 517.7516947206.

The spelling of 138792049 in words is "one hundred thirty-eight million, seven hundred ninety-two thousand, forty-nine".